Vertically adjustable bookkeeper&#39;s table



Sept. 7, 1948.

4 Sheets-Sheet 1 Filed Feb. 16, 1945 HVVENTUR.

w. F. GRAESKE VERTICALLY ADJUSTABLE BOOKKEEPERS TABLE Filed Feb. 16, 1945 Sept. 7, 1948.

4 Sheets-Sheet 2 h m w! W INVENTOR.

Sept. 7, 1948."

W. F. GRAESKE VERTI CALLY ADJUSTABLE BOOKKEEPERS TABLE 4 Sheets-Sheet 3 Filed Feb. 16, 1945 INVEN TOR.

Sept. 7, 1948. w. FQGRAESKE VERTICALLY ADJUSTABLE BOOKKEEPERS TABLE 4 Sheets-Sheet 4 Filed Feb. 16, 1945 I fizz 7617 02195? Patented Sept. 7, 1948 William F. .Graeske; Clear-water, Fla. Application February 16,""I945}Seri2tl N01'578",283

1 Claim.

1 This=invention-.-relates to a table .designedprimarily for use by bookkeepers. theprimary-object of the invention beingtoprovide a table having a top embodying a vertically movable book or ledger-support, so constructed that thebo-o-kor l'edger supported thereon may be elevat'edor low- ;eredlto mposition. so that the-open pages of the k; or ledger, will lie in a plane with thessurface tlof: the table, for. .the.co-mfort of .the person :using athebrooki'ojt ledger.

orAnother obiectof theinvention istotprovide '1 a'tablestop whichmaybe rotated or) moved towards and away from the person using the table, to locate the book or ledger supported thereon so that the person working with the book or ledger will have easy access thereto to the end that postings may be made and considered with facility.

With the foregoing and other objects in View which will appear as the description proceeds, the invention consists of certain novel details of construction and combination of parts hereinafter more fully described and pointed out in the claim, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawings Figure 1 is a plan view of a table constructed in accordance with the invention.

Figure 2 is a bottom view of the table top, portions .of the table top being shown in section.

Figure 3 is a sectional view taken on line 3-3 of Fig. 1.

Figure 4 is a fragmental sectional view through the top.

Figure 5 is a sectional View taken on line 5-5 of Fig. 1.

Figure 6 is a sectional View taken on line $6 of Fig. 2.

Figure '7 is a sectional view taken on line 'l-'l of Fig. 2.

Referring to the drawings in detail, the table embodies supporting legs 5 which are connected at their upper ends by means of the strips 6 that provide a support for the stationary top section I. The stationary top section I is circular in formation and is provided with a track section 8 which cooperates with the track section 9 carried by the rotatable top section I!) so that the sections 13 and 9 act to hold the rotatable top section to the stationary section, and at the same time permit of rotary movement of the section 9 with respect to the stationary top 1.

Secured along opposite side edges of the rotatable top section In, are track sections II which cooperate with track sections I'Z'inseouringfthe sliding top section l3 in position on the rotatable top section 10, so that thesliding-topjsection I3 The sliding top section I 3 is=formed v ith' a well in which the" 'verticallymovabl {boo-k *supp'o'rt l 4 -"rotatable top section l B; The inner edges "trans housings 1.5 are arrangedin-parallelfspaced'i'elation withrespect tzoeachpther andas showrnf'are disposed at'acute angles in-thehorimntafpldhe, Fig. l;'witlrrespect to" the sideedgeshf th'etable top. M a...

Secured to the under surface of the vertically movable book support I4. are tracks l6 which embody spaced plates between which the arms ll of the rods l8 and I9 operate. These tracks it are disposed in grooves formed in the bottom of the book support M, as clearly shown by Fig. 5 of the drawings.

On the free end of each arm H, are rollers 20' which rollers move over the tracks l6 and while they operate to raise or lower the vertically movable borok support I l, they also operate to secure the movable book support in itspositions of ver tical adjustment.

The rods l8 and I9 are mounted in bearings formed in the inner side walls of the housings I5, and one of the respective ends of the rods l8 and I9, is provided with a pinion 20. These pinions 20 contact with the pinions 2| formed at the ends of the shaft 22 that is provided with a gear 23, disposed intermediate the ends of the shaft 22. The shaft 22 is mounted in bearings 24 that rise from the bottom of one of the housings [5.

The reference character 25 indicates a bearing that is supported within one of the housings I5, the bearing accommodating the shaft 26 on which the crank handle 21 is formed. On the inner end of the shaft 26 is a worm gear 28 that meshes with the gear 23 so that rotary movement of the shaft 26 will operate to move the rods l8 and IS in opposite directions to the end that the arms I! will swing towards or away from each other, according to the direction of rotation of the shaft 26. Should it be desired to elevate the book support so that the open pages of the book positioned thereon, will lie flush with the upper surface of the table, the crank handle 21 is operated to rotate the shaft 26 in the desired direction. The arms I 1 will now swing towards each other and the wheels mounted at the outer ends of the arms I! will move over their track, raising the movable book support to the desired level.

When it is desired to lower the book, the handle will of course be rotated in the opposite direction.

From the foregoing it will be seen that due to the construction shown and described, a person working with a large account book or ledger, may position the book on the vertically movable book support and by operating the crank handle, elevate the book so that the persons arm will lie flat on the table top and book positioned on the table. Should it be desired to rotate the book, this may be done by merely moving the rotatable top section on its tracks. Should it be desired to move the book away from the operator or bring the book nearer to the operator to permit of posting or examination of thebook at the upper or lower corners of the book, the book may he slid towards or away from the person using the book, by moving the rotatable table top backwardly or forwardly on the tracks II and I2.

What is claimed is:

A table of the class described comprising a tabletop having a well formed therein, a vertical movable book support operating within the well, tracks extending along the lower surface of the vertically movable book support, said tracks embodying elongated housings, one side of each housing comprising plates having their inner longitudinal edges spaced apart providing a clearance, spaced parallel operating rods extending T across the bottom of the well, arms extending laterally from the operating rods, said rods having upturned ends disposed between the longitudinal edges of the plates, rollers mounted on the free ends of the arms, said rollers operating within the elongated housings in contact with the flanges gears secured to the ends of the rods, a transverse shaft mounted at the ends of the parallel operating rods, gears on the ends of the transverse shaft meshing with the gears on the parallel rods operating the rods and arms as the transverse shaft is operated, a power shaft and gear operating the transverse shaft, and a crank handle formed integral with the power shaft by means of which the power shaft is operated, and the crank handle being disposed beyond the front edge of the table for easy operation.

WILLIAM F. GRAESKE.

REFERENCES CITED UNITED STATES PATENTS Hanson Nov. 23, 1909 

